New submission from Борис Верховский <boris.v...@gmail.com>:

re.compile('([-_.a-zA-Z0-9]+)') == re.compile(r'([-\w.]+)') 

should return True because those are the same regex (\w is a-z, A-Z, 0-9 and 
the underscore). 

If you want to check if two regexes are identical you would compare the 
original strings, before re.compile.

----------
components: Regular Expressions
messages: 355791
nosy: boris, ezio.melotti, mrabarnett
priority: normal
severity: normal
status: open
title: Checking if two regexes are equal should test if they are functionally 
equivalent
type: enhancement
versions: Python 3.9

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue38660>
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